CFD Online Discussion Forums

CFD Online Discussion Forums (https://www.cfd-online.com/Forums/)
-   ANSYS (https://www.cfd-online.com/Forums/ansys/)
-   -   simple 2d open ended cylinder with moving piston: dynamic meshing query (https://www.cfd-online.com/Forums/ansys/128193-simple-2d-open-ended-cylinder-moving-piston-dynamic-meshing-query.html)

lmarf88 January 6, 2014 09:55

simple 2d open ended cylinder with moving piston: dynamic meshing query
 
1 Attachment(s)
Hi,
I am looking to do a 2D model of a moving piston in an open ended cylinder of constant diameter. I have seen relevant examples and they seem to use dynamic meshing, simulating the piston as a moving wall/ boundary condition. After reading through the Fluent manuals, I think that the layering scheme is sufficient for this simple problem. However, I am unsure of how to create a dynamic mesh zone to select which wall will be moving.
When I try to create a dynamic mesh zone it says there motion UDF/ profile is not specified. Do I have to write UDF code in order to create a dynamic mesh zone or is there a simpler way of doing this?


I have attached a screenshot of my issue.
Thanks in advance,
Lisa


All times are GMT -4. The time now is 02:29.